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TI-2026-70831 Aliases CVE-2026-108985GHSA-vhww-3hg5-5f37

Out-of-bounds write in libnfs ZDR decoding

Priority LOW 30CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

libnfs through 6.0.2 before 7613236 is affected. ZDR decoding in lib/libnfs-zdr.c writes out of bounds because the caller-supplied maxsize value is not honored (CWE-787). An unauthenticated remote attacker can corrupt memory and crash the application, but a user must interact with the crafted input.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00177 7th percentileScored 2026-11-07
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
sahlberglibnfsup to 6.0.2—Patch availableCNA
  • libnfs Vendorsahlberg Affected up to 6.0.2 Fixed in — Patch available CNA

Remediation

The sources list no fixed version for libnfs. Versions before 7613236 are affected.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-108985
  2. 2026-10-12 Alias added: GHSA-vhww-3hg5-5f37
  3. 2026-10-12 Priority changed: MEDIUM → LOW
  4. 2026-10-13 Affected versions changed · Red Hat
  5. 2026-10-13 CVSS score added · Red Hat
  6. 2026-10-13 CISA SSVC decision points changed

References

Patch 1

  • TI-2026-79487 Integer overflow in libsmb2 DCE/RPC NDR decoder lets servers corrupt heap CVSS 4.0HIGH 7.2
  • TI-2026-74155 Integer underflow in libsmb2 decode_acl causes heap over-read CVSS 4.0HIGH 7.1
  • TI-2026-74154 libsmb2 Heap Out-of-Bounds Read via File System Info Decoders CVSS 4.0HIGH 7.1
  • TI-2026-74153 Heap out-of-bounds read in libsmb2 lets SMB servers crash clients CVSS 4.0HIGH 7.1
  • TI-2026-41697 Integer underflow in sahlberg libnfs CVSS 3.1HIGH 7.1
  • TI-2026-38717 libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an… CVSS 3.1HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences